RockShox is good, because parts and so forth are readily available.

Here's a link to the service manual for the XC for series:

https://sram-cdn-pull-zone-gsdesign...._xc28_xc30.pdf

There's a statement on Page 5 about service intervals. Changing the bath oil in the fork legs is recommended after every 50 hours of riding. Your bushings will last longer if you do that and keep them properly lubricated.